Because the mourning period is now over, Lag Ba’omer is a popular date for weddings (which are not held during Sefirat Ha’omer) and haircuts.** Many have the custom not to cut a boy's hair until he is three years old, the age at which the child first begins to learn Torah. Since haircuts are delayed until after the period of mourning, and because there is Kabbalistic significance to hair, many put off the hair-cutting ceremony, called an Upsherin, until Lag Ba'Omer.

Lag Ba’Omer is also the anniversary of the death of Rabbi Shimon Bar Yochai, the famed Talmudic Kabbalist whose teachings are revealed in the Zohar. In Israel, tens of thousands of people travel to Mount Meron (near Safed) to observe his yahrtzeit near the cave in which he was buried. As per his deathbed request, his death is celebrated rather than mourned.

It is also common for families and friends to gather together for a bonfire and/or picnic on Lag Ba'omer, often on Mount Meron. There are several reasons given for this custom. One is that the word Zohar translates to “shining light,” and bonfires bring light to the world.

*Some people observe 33 days of mourning starting from the beginning of the month of Iyar until Shavuot. In such cases, however, Lag Ba'omer is excluded from the mourning customs.

**When Lag Ba'omer falls on Sunday, as it does this year, it is customary to have one's hair cut on Friday in honor of Shabbat.